This year’s Nobel Prize in chemistry has been awarded to three scientists whose work has greatly improved what we can look at under a microscope. Things that were once thought too small for optic magnification—such as the structures of proteins, the movement of viruses—can now be observed by the human eye and captured through the lens of a camera.
Light (or optic) microscopes use a light source and a system of lenses to bring the miniature into view. But they are constrained by natural properties of optics: Image resolution is limited by the wavelength of light used—anything smaller than about 0.2 millionths of a meter (or 200 nanometers) could not appear any clearer than a blob. (A different kind of microscope, called an electron microscope, does not have this size restriction, but it can only look at specially fixed samples, not living cells or organisms.)
Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.
Join us every Wednesday night at 8pm ET for Ask an Engineer!
Learn resistor values with Mho’s Resistance or get the best electronics calculator for engineers “Circuit Playground” – Adafruit’s Apps!
Maker Business — Steve Ballmer Serves Up a Fascinating Data Trove
Wearables — Chalk it up
Electronics — Look to ferrites (no, not ferrets, the European polecat) when faced with high frequency
Biohacking — A Run in the Altra IQ Smart Shoes
No comments yet.
Sorry, the comment form is closed at this time.